20742255

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14869}}^1$

素因数の和:14911

約数の個数: 24

約数和(自身を含む): 37115520

約数和(自身を除く): 16373265

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14869, 44607, 74345, 133821, 223035, 460939, 669105, 1382817, 2304695, 4148451, 6914085, 20742255]

約数ペア:

[(1, 20742255), (3, 6914085), (5, 4148451), (9, 2304695), (15, 1382817), (31, 669105), (45, 460939), (93, 223035), (155, 133821), (279, 74345), (465, 44607), (1395, 14869)]